Erecting-staging.



W. L. POWER, DECD. J. J. MURRAY, ADMINISTRATOR. EREGTING STAGING.

APPLICATION FILED 00130, 1912.

1,1 34,061 Patented Mar. 30, 1915.

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invrrn s'ra WALTER L. POWER, OF SPRINGFIELD, MASSACHUSETTS; JOHN J.MURRAY, OF SPRINGFIELD, MASSACHUSETTS, ADMINISTRATOR,- OF SAID POWER,DECEASED.

EBECTING-STAGING.

Specification of Letters Patent.

Application filed October 30, 1912. Serial N0. 728,741.

To all whom it may concern Be it known that I, VVALTER L. POWER, a

itizen of the United States of America, re-

siding at Springfield, in the county of Hampden and State ofMassachusetts, have invented new and useful Improvements inErecting-Staging, of which the following is a specification.

This invention relates to an erecting staging of improved construction.

The invention has been found particularly useful in erecting theelevator shafts in high buildings but is broadly capable of analogoususes. In erecting elevator shafts it is necessary to use and supportheavy erecting tools and since the fittings are for the most part on theside walls of the shaft extending continuously from bottom to top thework of erecting occurs adjacent the walls. It is, therefore, desirableto provide a working platform adapted to give a free working space atthe working points and at the same time support heavy loads at suchpoints without tipping the platform. It is also desirable to provide forall vertical adjustments of the platform so that the workmen can operateat the most convenient levels.

The object of this invention is to provide an erecting staging with thedesired advantages named which will be simple of construction andeconomical to put up and use.

The invention can be embodied in various forms and I have chosen onlyone form which shows the preferred embodiment of my invention forpurposes of illustration.

This form is shown in the accompanying drawings in which,-Figure l is avertical section of an elevator shaft in process of construction showingthe erecting staging in its relation thereto. Fig. 2. is a horizontalsection of the same showing the staging in plan View.

In the drawings a represents the walls or frame work of the elevatorshaft, which, as far as this invention is concerned, may be in skeletonform or inclosed as shown. The several floors are represented by r andq. The staging comprises a lower frame 0 made of four pieces of plankingmade into a square and a working platform above 0 and connected theretoby the rigid pipe members m, one fastened firmly to each corner of 0 atone end, and at the other end to platform 39, but away from the cornersand edges of p. The platform 79 is of larger area than frame 0, therebeing around the edges of platform p, outside of the square formed bythe four points of attachment of members on, a free working spaceunobstructed by any of the constructional details of the staging. Thisplatform is arranged to hold working tools it and 2'.

It can be seen that the frame piece 0 and platform 39 together withrigid connecting members 47?. form a very firmly constructed stagingcapable of withstanding severe strains when properly supported. In orderto support this staging the chains 6 are attached to the four corners ofthe frame 0 and brought together by attaching them to tackle f, theropes g of which can be operated to give any desired vertical adjustmentof the staging. Four vertical tightly strung wires 0 pass through frame0, platform 29 and connecting members on. These wires serve not only asguide wires but as binding means against which the rigid connectingmembers on bear whenever there is the least tendency for the platform totip or tilt. The members on have an effective length to bind againstwires m, and since the latter are tightly strung they take the straincaused by heavy loads on the working space at the edge of the platform.Thus the wires aid in supporting the platform and positively prevent anytilting thereof. Furthermore the staging can be raised and lowered onthe wires without the least inconvenience. WVires have before been usedfor guiding platforms, for instance, in dumbwaiter constructions, but,as far as known, this construction has not been used to provide aguiding and supporting means in combination with a working platformdesigned to cause a binding action on the wires.

The free working space, as at edges Z4 and Z, affords easy access to thesides of the shaft and in the position shown are adapted for erectingthe elevator guides. It is clear that with workmen standing on theworking spaces they are unhampered by the supporting means for theplatform and, at the same time, the supporting and guiding meanspositively prevent any tipping of the platform.

What I claim, is

\ An erecting staging, comprising, in combination, a series of guidingcables, a rigid npper Workingplatform, a rigid l'oWer horizontal: frame,vertically arranged meansrigidly holding said platfbrmvand' frame: in

spacedi relation,. said meansloei'nggg eonnected to the underside of theplatform Well ithin bles, each passable through said platform welLWithin the; peripherythereofliawhereby the. platform is left with a freeWorking space around its. periphery and is prevented fi'oni tipping duetogwei'glit on oB'ad-jacent the periphery and adjustable support ng 157' means for the fitnessesg;

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